Water stop clamp

Abstract

The utility model relates to the field of medical instruments, in particular to a water stop clamp which comprises a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are both connected through an arc-shaped connecting section formed by bending to one end. The other end of the second connecting arm is provided with a lock catch connecting section extending towards the direction of the first connecting arm; a cylindrical lug facing the second connecting arm is arranged on the inner side of the first connecting arm; the inner side of the second connecting arm is provided with two cylindrical protruding blocks which are longitudinally arranged, and an arc-shaped transition face between the two cylindrical protruding blocks is matched with the cylindrical protruding blocks on the first connecting arm. The water stop clamp has the advantages that the arc-shaped transition face is matched with the cylindrical protruding block on the first connecting arm, the closure effect on an infusion tube is better achieved when the water stop clamp is closed, and the risks of blood backflow and thrombus in the infusion process are reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a water stop clamp. Background Art

[0002] At present, intravenous indwelling needles have been widely used clinically due to their convenience. This type of indwelling needle is usually composed of a needle assembly, a catheter assembly, a hose, a one-handed clamp or a sheet clamp, an end cap, a color tee (or a positive pressure connector), and a heparin cap. During use, in order to ensure the closure of the hose, a sheet clamp or a one-handed clamp is often used for fixing. However, in clinical practice, we found that when the intravenous indwelling needle is in a closed state, blood easily flows back into the indwelling catheter. If this situation continues for a long time, it may cause blood to be blocked in the catheter and then form a thrombus, which will not only affect the patient's treatment effect, but may also cause serious medical accidents. Therefore, when using an intravenous indwelling needle, we need to pay special attention to this and take effective measures to prevent blood reflux and thrombosis to ensure the safety of the patient and the smooth progress of treatment.

[0003] Chinese patent CN 109529188 A discloses a multifunctional water-stop clamp, which specifically includes: a quadrilateral movable arm, a circular arc surface at the lower left of the quadrilateral movable arm, a base, a protrusion on the base, a top of the upper end, and a buckle card. The quadrilateral movable arm is pressed close to the base, and the buckle card and the top of the upper end are used to form a buckle to achieve locking of the water-stop clamp. The circular arc surface at the lower left of the quadrilateral movable arm and the protrusion on the base are pressed together to achieve interception of the infusion tube. The technical solution is that the arc surface and the protrusion with the arc surface press against each other to achieve interception of the infusion tube. The pressure of the mutual pressing comes from the deformation of the water-stop clamp and the limit of the buckle, so the pressure is a constant value, and the pressing surface is a larger arc surface, and the pressure is correspondingly smaller, so the squeezing and intercepting effect on the infusion tube is poor. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a water-stop clamp to enhance the squeezing effect of the water-stop clamp on the infusion pipeline of the indwelling needle when it is closed, thereby realizing the free opening and closing of the infusion pipeline of the indwelling needle, preventing the patient's blood from flowing back and the formation of thrombus in the infusion pipeline, and ensuring the patient's safety and treatment effect.

[0005] In order to achieve the above-mentioned purpose, a water stop clamp is designed, including a first connecting arm and a second connecting arm, wherein the first connecting arm and the second connecting arm are connected by an arc-shaped connecting section formed by bending at one end; the other end of the second connecting arm is provided with a locking connecting section extending toward the first connecting arm; a cylindrical protrusion facing the second connecting arm is provided on the inner side of the first connecting arm; two longitudinally arranged cylindrical protrusions are provided on the inner side of the second connecting arm, wherein the arc-shaped transition surface between the two cylindrical protrusions cooperates with the cylindrical protrusion on the first connecting arm.

[0006] Preferably, the arc-shaped connecting section and the lock connecting section of the utility model are provided with through holes for passing the hose.

[0007] Preferably, a gap is left between the first connecting arm and the locking connecting section of the utility model, and a barb structure is provided on the locking connecting section for clamping an end of the first connecting arm away from the arc-shaped connecting section.

[0008] Preferably, a triangular support structure is provided on the inner side of the first connecting arm of the utility model, and a cylindrical protrusion is provided at the vertex of the triangular support structure.

[0009] Preferably, a triangular support structure is provided inside the second connecting arm of the utility model, and two cylindrical protrusions are respectively provided on the vertex and hypotenuse of the triangular support structure, and an arc-shaped connecting surface is formed between the two cylindrical protrusions.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. The utility model cooperates with the cylindrical protrusion on the first connecting arm through the arc transition surface, so as to better achieve the interception effect of the infusion tube when the water stop clamp is closed, and reduce the risk of blood reflux and thrombosis during the infusion process.

[0012] 2. The utility model is provided with a triangular support structure and a cylindrical protrusion, which has good force-bearing performance, is not easy to be damaged, and has extremely high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 , a three-dimensional diagram of the utility model;

[0014] Figure 2 , a front view of the utility model;

[0015] In the figure: 1 first connecting arm; 1.1 first connecting arm cylindrical protrusion; 1.2 first connecting arm supporting structure; 2 second connecting arm; 2.1 second connecting arm cylindrical protrusion; 2.2 second connecting arm supporting structure; 2.3 arc-shaped transition surface; 3 arc-shaped connecting section; 4 locking connecting section; 4.1 barb; 5 through hole; 6 gap;. DETAILED DESCRIPTION

[0016] In order to make the purpose, principle and structure of the utility model clearer, it is further described below in conjunction with the drawings and specific embodiments.

[0017] The utility model provides a water stop clamp, comprising: a first connecting arm 1 and a second connecting arm 2. The first connecting arm 1 and the second connecting arm 2 have one end extending section bent and connected through an arc connecting section 3, and the arc connecting section 3 is provided with a through hole 5 for a liquid infusion tube to pass through.

[0018] A triangular support structure 1.2 is provided on the side of the first connecting arm 1 facing the second connecting arm 2. The support structure 1.2 is composed of two connecting plates of the same width as the first connecting arm 1, forming a triangular support structure 1.2 with the first connecting arm 1 as the base and the connecting plates as the waist. A cylindrical convex block 1.1 is provided on the top of the support structure 1.2.

[0019] A triangular support structure 2.2 is provided on the side of the second connecting arm 2 facing the first connecting arm 1. The support structure 2.2 is composed of two connecting plates of the same width as the second connecting arm 2, forming a triangular support structure 2.2 with the second connecting arm 2 as the base and the connecting plates as the waist. A cylindrical convex block 2.1 is provided on the top of the support structure 2.2, and a second cylindrical convex block 2.1 is provided on the connecting plate on one side of the support structure 2.2. The two cylindrical convex blocks 2.1 on the second connecting arm 2 together form an arc-shaped transition surface 2.3, and the arc-shaped transition surface 2.3 can cooperate with the cylindrical convex block 1.1 on the first connecting arm 1.

[0020] The second connecting arm 2 is provided with a lock connecting section 4 at one end away from the arc connecting section 3, and a barb 4.1 is provided at the far end of the lock connecting section. The lock connecting section 4 is provided with a through hole 5 for the infusion tube to pass through. There is a gap 6 between the lock connecting section 4 and the first connecting arm 1, so that no contact occurs.

[0021] For specific applications:

[0022] Installation of the water stop clamp: Pass the infusion tube through the through hole 5 on the arc-shaped connecting section 3 and the through hole 5 on the locking connecting section 4 at one time.

[0023] The water stop clamp is locked: Press the first connecting arm 1, the arc-shaped connecting section 3 is deformed and bent under the pressure, and one end of the arc-shaped connecting section 3 of the first connecting arm 1 is pressed to collide with the lock connecting section 4. Continue to press until one end of the arc-shaped connecting section 3 of the first connecting arm 1 is stuck in the barb 4.1 and is limited by the barb 4.1. At this time, the first connecting arm 1 and the second connecting arm 2 are close to each other, and the cylindrical protrusion 1.1 and the arc-shaped transition section 2.3 are pressed together. This pressing fit makes the infusion tube passing through be squeezed and deformed, and the liquid in the infusion tube is cut off by the deformed infusion tube. And due to the limitation of the barb 4.1, the first connecting arm 1 and the second connecting arm 2 remain close to each other, and the cylindrical protrusion 1.1 and the arc-shaped transition section 2.3 remain pressed together.

[0024] The water-stop clamp is unlocked: the distal end of the locking connecting section 4 is locked outward, causing the locking connecting section 4 to deform, and the barb 4.1 moves away from the first connecting arm 1 until it no longer collides with the first connecting arm 1. The barb 4.1 releases the limit on the first connecting arm 1, and the arc-shaped connecting section 3 recovers from the deformed state to the initial non-deformed state. Driven by the arc-shaped connecting section 3, the first connecting arm 1 moves away from the second connecting arm 2, releasing the pressure of the cylindrical protrusion 1.1 on the arc-shaped transition section 2.3, and releasing the squeezing of the cylindrical protrusion 1.1 and the arc-shaped transition section 2.3 on the infusion tube. The infusion tube recovers from the deformed interception state to the initial conduction state, and the liquid in the infusion tube resumes flowing.

[0025] The above is only a specific implementation method of this utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical solution and new concept of the utility model, shall be covered by the protection scope of the utility model.

Claims

1. A water stop clamp, characterized in that: It includes a first connecting arm and a second connecting arm, wherein the first connecting arm and the second connecting arm are connected by an arc-shaped connecting section formed by bending to one end; the other end of the second connecting arm is provided with a locking connecting section extending toward the first connecting arm; the inner side of the first connecting arm is provided with a cylindrical protrusion facing the second connecting arm; the inner side of the second connecting arm is provided with two longitudinally arranged cylindrical protrusions, wherein the arc-shaped transition surface between the two cylindrical protrusions cooperates with the cylindrical protrusion on the first connecting arm.

2. A water stop clamp as claimed in claim 1, characterized in that The arc-shaped connecting section and the lock connecting section are provided with through holes for passing the hose.

3. A water stop clamp as claimed in claim 1, characterized in that A gap is left between the first connecting arm and the locking connecting section, and a barb structure is provided on the locking connecting section for clamping an end of the first connecting arm away from the arc-shaped connecting section.

4. A water stop clamp as claimed in claim 1, characterized in that A triangular support structure is provided on the inner side of the first connecting arm, and a cylindrical protrusion is provided at the vertex of the triangular support structure.

5. A water stop clamp as claimed in claim 1, characterized in that A triangular support structure is provided on the inner side of the second connecting arm. Two cylindrical protrusions are provided on the vertex and the hypotenuse of the triangular support structure respectively, and an arc-shaped transition surface is formed between the two cylindrical protrusions.

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